My unread Gmail count reads "-1"!

This happens sometimes when you use the broad #SUG# variable for unread Gmail counts. If you specify the exact label you want Zooper to check, you shouldn't have this problem anymore. The best way to do this is to use the canonical folder names, as shown here: Canonical Gmail Folder Names. These will be universal across different languages. For example, if you want to check your Gmail's Inbox, use the variable: #SUG^i#